The National Hurricane Center continues to monitor an area of low pressure that it says has a 90 percent chance of tropical formation in the Gulf of Mexico.

According to the NHC, a reconnaissance aircraft has been studying the system, which found it highly elongated and lacking a well-defined center. During the most recent update Monday, the system had not been identified as a tropical cyclone.

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"The low still has the potential to become a tropical storm at any time before it reaches the Texas coast (Tuesday)," the NHC said on its website.

The NHC said the system is producing 45 mph winds. It is likely to bring heavy rainfall with possible flooding across portions of eastern Texas and western Louisiana.

"Regardless of tropical cyclone formation, tropical storm conditions are likely along portions of the middle and upper Texas coast and possible in extreme southwestern Louisiana," the NHC said on its website.